/// <summary>
/// Note: annotation can consist not only of one area specified by the RECT entry, but also of multiple areas specified
/// by the QuadPoints entry in the annotation dictionary.
/// </summary>
private void ExtractLocationsFromSingleRedactAnnotation(PdfRedactAnnotation redactAnnotation)
{
IList <Rectangle> regions;
PdfArray quadPoints = redactAnnotation.GetQuadPoints();
if (quadPoints != null && !quadPoints.IsEmpty())
{
regions = TranslateQuadPointsToRectangles(quadPoints);
}
else
{
regions = new List <Rectangle>();
regions.Add(redactAnnotation.GetRectangle().ToRectangle());
}
redactAnnotations.Put(redactAnnotation, regions);
int page = pdfDocument.GetPageNumber(redactAnnotation.GetPage());
Color cleanUpColor = redactAnnotation.GetInteriorColor();
PdfDictionary ro = redactAnnotation.GetRedactRolloverAppearance();
if (ro != null)
{
cleanUpColor = null;
}
foreach (Rectangle region in regions)
{
AddCleanupLocation(new PdfCleanUpLocation(page, region, cleanUpColor));
}
}
public virtual void CleanUpTest45()
{
String input = inputPath + "emptyPdf.pdf";
String output = outputPath + "emptyPdf.pdf";
String cmp = inputPath + "cmp_emptyPdf.pdf";
PdfAnnotation redactAnnotation = new PdfRedactAnnotation(new Rectangle(97, 405, 383, 40)).SetOverlayText(new
PdfString("OverlayTest")).SetDefaultAppearance(new PdfString("/Helv 0 Tf 0 g"));
PdfDocument pdfDocument = new PdfDocument(new PdfReader(input), new PdfWriter(output));
pdfDocument.GetFirstPage().AddAnnotation(redactAnnotation);
new PdfCleanUpTool(pdfDocument, true).CleanUp();
pdfDocument.Close();
CompareByContent(cmp, output, outputPath, "diff_45");
}
public virtual void CleanUpTest46()
{
NUnit.Framework.Assert.That(() => {
String input = inputPath + "emptyPdf.pdf";
String output = outputPath + "emptyPdf.pdf";
PdfAnnotation redactAnnotation = new PdfRedactAnnotation(new Rectangle(97, 405, 383, 40)).SetOverlayText(new
PdfString("OverlayTest"));
PdfDocument pdfDocument = new PdfDocument(new PdfReader(input), new PdfWriter(output));
pdfDocument.GetFirstPage().AddAnnotation(redactAnnotation);
new PdfCleanUpTool(pdfDocument, true).CleanUp();
pdfDocument.Close();
}
, NUnit.Framework.Throws.TypeOf <PdfException>().With.Message.EqualTo(PdfException.DefaultAppearanceNotFound));
;
}
/// <summary>
/// Perform tentative cleanup of areas of interest on a given
/// <see cref="iText.Kernel.Pdf.PdfPage"/>
/// This method will add all redaction annotations to the given page, allowing
/// the end-user to choose which redactions to keep or delete.
/// </summary>
/// <param name="pdfPage">the page to clean up</param>
public virtual void TentativeCleanUp(PdfPage pdfPage)
{
IList <PdfCleanUpLocation> cleanUpLocations = GetPdfCleanUpLocations(pdfPage);
// random title generation
Random rnd = new Random(SystemUtil.GetTimeBasedIntSeed());
ICollection <String> usedTitles = new HashSet <String>();
foreach (PdfCleanUpLocation loc in cleanUpLocations)
{
float[] color = loc.GetCleanUpColor().GetColorValue();
// generate random annotation title
String title = "Annotation:" + rnd.Next();
while (usedTitles.Contains(title))
{
title = "Annotation:" + rnd.Next();
}
// convert to annotation
PdfAnnotation redact = new PdfRedactAnnotation(loc.GetRegion()).SetDefaultAppearance(new PdfString("Helvetica 12 Tf 0 g"
)).SetTitle(new PdfString(title)).Put(PdfName.Subj, PdfName.Redact).Put(PdfName.IC, new PdfArray(new float
[] { 0f, 0f, 0f })).Put(PdfName.OC, new PdfArray(color));
pdfPage.AddAnnotation(redact);
}
}
